http://www.w3.org/ns/prov#value | - A shop would need to charge out at $65 to $70/hour to cover themselves for things such as tool breakdown or wear, shop improvements or upkeep & a myriad of other like business license, insurances, unforeseen things like a customer stiffing them for money & not getting paid or being unrightfully sued (ask any shop owner or other businessmen, it does happen).
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